Blind flange

What is a blind flange in English? What is a blind flange? A blind flange, also known as a solid flange (Blind Flange), is a type of flange without a hole in the middle and is often used to temporarily seal the ends of waiting pipes that can be easily installed and removed at any time.

Solid flanges are available in a variety of materials: stainless steel, plastic, steel, etc., and are applied to flange standards such as JIS, BS, ANSI, and DIN. All industrial pipe sizes have sizes for using blind flanges. Join Bao Tin Steel to learn more about the product in detail through the article below.

Types of blind flanges

After understanding what a blind flange is, the next piece of information that Bao Tin Steel wants to share with you is the most popular types of solid flanges today.

Classification of blind flanges by material

• Blind Stainless Steel Flange is a type of stainless steel flange that only has holes for tightening bolts without a cutout to connect to the stainless steel pipe. Therefore, solid stainless steel flanges have the effect of sealing, preventing the flow of fluid, and they are made of stainless steel 304, 316. This type of solid stainless steel flange is aesthetic, durable, and has good chemical resistance. However, this type of stainless steel blind flange is more expensive than other types.

• A blind plastic flange is a type of plastic flange that does not have a hole in the middle and is often used to temporarily close the ends of pipes. They can be easily disassembled and reassembled at any time. Currently, on the market, the popular types of solid plastic flanges are PVC blind flange, UPVC solid flange, PPR blind flange, and CPVC solid flange.

• Blind Steel Flange is a type of steel flange that has no hole in the middle and is often used to temporarily close the ends of pipes.

Classification of solid flanges by surface

• The RF (raised face) blind flange is a commonly used solid flange. As the name suggests, this type of flange has a raised surface above the bolt circle (where the gasket is located). The sealing of this type of flange is achieved by compressing a soft, flat, or semi-metallic gasket between the mating flanges in the raised area of the flanges.

• FF (Flat Face) Solid Flange: A flat face is a solid flange that does not have a raised surface above the screw ring (where the gasket is located). Instead, the entire surface is flat. This means that the gasket used with an FF flange makes full contact with the entire surface where the two flanges are joined together.

• An RTJ (Ring Type Joint) solid flange is a solid flange with a groove design cut on the surface and a raised face with a connecting groove that is tightened to be able to contact each other.

Specifications of solid flange

* JIS Standard Blind Flange

* ANSI Standard Solid Flange

*BS standard blind flange

What is a blind flange for?

The most obvious feature of a blind flange is that its center has no holes for the fluid to pass through. On the flange plate, there are only holes for connecting bolts.

Its main purpose is to “seal.”. And in most cases, blind flanges are only installed at the ends of pipes. Replacing welding cups, and plugs in large pipes,…

Bao Tin Steel is one of the suppliers of quality blind flanges with the most competitive prices in the Vietnamese market.

After this article, we hope that customers have more useful information about solid flange products. If you need to buy pipe fittings or are wondering about the price of solid flanges, please contact Bao Tin Steel Company directly.

Tiger Steel is a branch of Bao Tin Steel.